Extended Power Dynamic Range and Enhanced Power Conversion Efficiency of a Switched-Capacitor DC-DC Converter: A Tutorial

Ho, Tian Siang and Ramiah, Harikrishnan and Churchill, Kishore Kumar Pakkirisami and Chen, Yong and Mak, Pui-In and Martins, Rui P. (2024) Extended Power Dynamic Range and Enhanced Power Conversion Efficiency of a Switched-Capacitor DC-DC Converter: A Tutorial. IEEE Transactions on Circuits and Systems II-Express Briefs, 71 (3). pp. 1606-1612. ISSN 1549-7747, DOI https://doi.org/10.1109/TCSII.2023.3324711.

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Official URL: https://doi.org/10.1109/TCSII.2023.3324711

Abstract

This tutorial brief presents a concise overview of integrated switched-capacitor (SC) DC-DC converter topologies for miniaturized energy harvesting (EH) IoT systems aiming for extended power dynamic range (PDR) and enhanced power conversion efficiency (PCE). This tutorial initiates by delving into the intricate SC conversion methodologies tailored for energy harvesting (EH) applications, including i) fine-grained conversion ratio (CR) tuning, ii) multiphase soft charging, and iii) clock frequency and amplitude scaling. Next, mathematical analysis is conducted along with an established model to correlate the prevailing dominant loss and its impact on the PCE and the PDR, aiming to provide designers with a guideline for different design parameter choices for the triode/subthreshold domain.

Item Type: Article
Funders: International Funding
Uncontrolled Keywords: DC-DC converter; energy harvesting; extended power dynamic range; reconfigurable; switched capacitor; CMOS
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > Department of Electrical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 25 Oct 2024 07:09
Last Modified: 25 Oct 2024 07:09
URI: http://eprints.um.edu.my/id/eprint/45508

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